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Are pointers initialized to nullptr in a vector?

lride · 2013-03-26T16:18:22

class A{...}; int main() { std::vector<A*> vec; vec.resize(10); std::cout<<(vec[9]==nullptr); //prints 1 } ? ? ? I want to make sure this happens on every system. Are pointers initialized to nullptr?

General and Gameplay Programming Programming

Started by lride March 24, 2013 05:26 AM

9 comments, last by SiCrane 11 years ago

SiCrane

11,840

March 26, 2013 04:18 PM

About the only advantage I know of is that the pointer containers propagate constness. That is if you have a const_iterator to a ptr_vector you can't modify the stored object through that iterator, but a const_iterator to a std::vector of std::unique_ptrs can still be used to modify the pointed to objects.